A threatening letter was found at U.S. Sen. Dean Heller’s office in Las Vegas over the weekend, but there was no break-in as initially reported, Metro Police said today.

Police received a call about 9 a.m. Sunday from an alarm company reporting a burglary alarm at the main entrance of Heller’s office at 8930 W. Sunset Road, near Durango Drive.

Officers determined there was no burglary but found a threatening note addressed to Heller near the door, police said. Officers took a report for “threatening or obscene letters or writing” and opened an investigation, police said.

Neither Heller's Office nor Metro would comment on the contents of the letter.